#1 seems to be the most genuine in terms of her enjoyment. Nice bleached anus on her too! #2 seems to be more of a 'pretender', like chicks who only take the head of your cock in their mouth, but still call it DT. #3 seems as dispassionate as an SP who is 'gay for pay'. She'll munch some carpet for a slight up-sell, but it will never get her off.
So, award for best performance by a PAWG in a GIF goes to #1! Congrats baby, great ride!